Stewart keeps interest high throughout the journey with first-rate brainteasers, interludes of physical danger, and the children's own complex dynamics... [readers] will find this sequel a worthy successor." - Horn Book"
Trust, friendship, human nature, pride, and courage underlie the story and add depth... This classic struggle of good versus evil also includes the many layers in between." - VOYA"
...entertainingly quirky..." - Kirkus"
Crafty and involving for readers as they figure out clues alongside the [characters]... every bit as chunky and satisfying as the first, this adventure will delight fans." - The Bulletin